CN2205779Y

CN2205779Y - Automatic magnetic health character-eliminating mathematics board with dust-free feature

Info

Publication number: CN2205779Y
Application number: CN 94248843
Authority: CN
Inventors: 赵红军
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-12-30
Filing date: 1994-12-30
Publication date: 1995-08-23
Anticipated expiration: 2004-12-30

Abstract

The utility model relates to an automatic magnetic character-eliminating digital board with dust-free and health care features, which comprises a magnetic writing board, a character-eliminating stick and a device which can drive the character-eliminating stick to slide, wherein, the character-eliminating stick can be slidingly arranged at the back of the magnetic writing board. The utility model can realize automatic large area character elimination with dust-free feature.

Description

Automatic magnetic health character-eliminating mathematics board with dust-free feature

The utility model relates to a kind of mathematics apparatus, more particularly, relates to a kind of dustless health care mathematics of word magnetic plate that disappears automatically.

Although the teaching of various countries, the world today is greatly improved with the quality of plate and chalk, adopt the environment that chalk is write has not only influenced the classroom, also directly influence user's health, more do not adapt to the hygienic requirements of audio-visual classroom.In addition, the chalk easy fracture can be left a large amount of chalk heads.

In view of above problem, some producer develops the liquid of writing of a kind of by name " one cleans ", and is this when writing liquid and wiping with blackboard eraser, do not produce powder, yet it is a kind of chemical substance, and cost is very high, and soft nib is fragile when writing in a large number, owing to be liquid, use not very convenient, moreover need hand blackboard eraser when disappearing word and wipe, waste time and energy, this product is not ideal in practicality, especially in teaching.

And by Zhucheng, Shandong Province electronic toy factory, " the toy for children magnetic wordpad " that Wuxi City Dong Ting town no cylinder skill magnetic wordpad Co., Ltd produces.It has changed the write principle of above various teaching with plate, designs according to the principle that attracts each other between magnetic bodies, and its plate face structure and operation principle be as described below:

Plate face structure; Before the plate face divided, the back was two-layer, and is middle with cellular little lattice connection, not connected between little lattice and the little lattice, respectively is separate unit, and all white abrim oily liquids is mixed with the little black particle of a large amount of magnetic in each little lattice in the liquid.

Write operation principle: write in the front of plate with the pen that has magnetic; the black granule that then is mixed with in the liquid is because of being moved to the front of plate by magnetic attraction; because of the plate face is that transparent material is made; so conveniently can see writing or the figure of being formed by the black granule on the ground that magnetic pen was write; in the time of need disappearing word; at the reverse side of plate with a magnetic bodies side-to-side movement; be used for attracting the black granule to move to the front of plate; then just can't see writing or the figure that the black granule is formed, thereby reached the purpose of the word that disappears in the front of plate.

" toy for children magnetic wordpad " write conveniently, without chalk, do not produce powder, but this plate has following some deficiency:

The poor definition of 1 writing;

2 life-spans are short;

3 if make large-area teaching plate, and its word device that disappears uses inconvenient;

4 can not eliminate the indivedual writings on the plate;

5 writings do not have colour;

The function singleness of 6 magnetic pens;

In view of above many shortcomings, this plate can not be used for far reaching teaching aspect.

Task of the present utility model provides that a kind of life-span is long, and writing is clear, and no dust has the large tracts of land word function that disappears automatically, the part word function that disappears, the teaching plate of colour writing function and significant Magnetotherapeutic health function.It can guarantee to be engaged in the healthy of various faculties effectively, safeguards the hygiene of classroom environment, reduces the labour intensity of work, has adapted to the modern day by day needs of teaching equipment.

Task of the present utility model is achieved in that provides a kind of magnetic the dustless word health care mathematics plate that disappears automatically, comprise a magnetic wordpad, also comprise: be slidably mounted in the word rod that disappears at the described magnetic wordpad back side, and drive the device that the described word rod that disappears slides.

The described drive device that word rod slides that disappears comprises: micromotor, the control device of micromotor, the deceleration device that is connected with the shaft mechanical of described micromotor, and the device that drives the described word rod slip that disappears by described deceleration device, at the back side of described magnetic wordpad, local demagnetization's piece is installed slidably also.

Adopt such scheme, drive the word rod that disappears by described electric actuator and just can realize the word that disappears automatically in large area.

The utility model is concentrated the advantage of various boards in the market, adopts full-closed structure, does not have any dust, pollutes, and noise is write without chalk, extremely cleaning.Because of adopting the large tracts of land word device that disappears automatically, only need a user one press switch, can in seconds eliminate the whole writings on the plate, time saving and energy saving.Although this plate adopts electrical equipment, very power saving.As the motor of a 5OW, wiping a plate face needs 10 seconds, and every class is wiped 4 times, and every days 5, class used 300 days in 1 year, as calculated, and power consumption less than 15 degree.

The utility model is more prior to be: the inside of plate face, and magnetic pen, blackboard eraser all contain a large amount of magnetisable materials, this whole body to the user all has magnetotherapy effect, health-care effect is splendid, and to the myopia that prevents the teacher especially centering the aged's hypertension, the coronary heart disease treatment effect is more obvious.

Below in conjunction with description of drawings embodiment of the present utility model, wherein:

Fig. 1 is the sectional view of magnetic wordpad;

Fig. 2 is the blackboard eraser that the utility model is used;

Fig. 3 is a structural representation of the present utility model;

Fig. 4 is electric control theory figure of the present utility model.

The utility model is in addition objective on the basis of " toy for children magnetic wordpad ", and economic transformation realizes.Concrete remodeling method is as follows:

1, the raising of writing definition: because of the cellular little lattice area of " toy for children magnetic wordpad " plate face excessive, and black magnetic granule negligible amounts in the white liquid, so the definition of writing is restricted, for addressing this problem, make its cellular little lattice into the little lattice of rhombus, the size of little lattice; Long-diagonal is 2mm, and short diagonal is 1.5mm, and suitably increases the short grained quantity of black in the liquid.

2, the increase in plate face life-span: the face sheet material of " toy for children magnetic wordpad " is a transparent plastic, and thickness 2-3mm only, and is very fragile.So this plate plate face adopts transparent organic glass, thickness is 8mm.Its profile is seen Fig. 1, and 1 is the front of plate among Fig. 1, and thickness is 2mm, and 2 is the little lattice of rhombus, and thickness is 4mm, and 3 is the reverse side of plate, and thickness is 2mm.

The utility model is to have increased motor tractor and automatic control circuit on the word principle basis that disappears of " children's magnetic wordpad ", makes it become the word that disappears automatically by the word that manually disappears.

Automatically the specific requirement of word of disappearing is as follows:

1, any one termination that word rod arrives plate that disappears can be turned off motor automatically, and has indicator lamp to indicate its motion process.

2, the user can make the word rod that disappears stop in any position.

The part of this plate word function that disappears makes " toy for children magnetic wordpad " be transformed into the teaching with great practical value to become possibility with plate.

The part word principle that disappears: respectively place a magnetic bodies at the obverse and reverse of clipboard face, wherein the magnetic bodies of plate reverse side is bigger than the area of the magnetic bodies in plate front, but light weight.When needs were eliminated indivedual writing of plate face, the magnetic bodies that the user picks up the plate front attracted the magnetic bodies of plate reverse side, made it to the disappear place motion of word of needs, because of the magnetic bodies area of plate reverse side is big, so the writing that its energy cancellation will be removed.For convenient, the magnetic bodies of plate reverse side is some, and the outer magnetic bodies of plate is easy to use, is made into the blackboard eraser of selling on shape such as the market, and outsourcing one deck flannelette is used for protecting, and its structure is seen

profile

2, and 1 is plank among the figure, and 2 for oozing magnetic rubber, and 3 is flannelette.

Because the principle of writing of this plate limits, colorize can't be realized in the writing of this plate.But this deficiency can be write liquid with " one cleans " that preamble is mentioned and be remedied, and its consumption few (only using when mapping) can not influence result of use, and it is soft using the nib of writing liquid, can the scuff panel face, colored writing can directly be wiped with the flannelette on the magnetic blackboard eraser.

The magnetic pen person's of being to use writing implement for easy to use, is designed to two kinds of purposes with it; One end is the magnetic writerhead, is used for the plate face and writes, and nib is equipped with spiral, and the back-out of using is without precession.The other end is common pen or ball pen, is used for routine work.The double-purpose pen of selling on the global shape of pen such as the market, but a body is slightly short, writes in order to the plate face, is furnished with the cap for brush, for carrying.

Below in conjunction with accompanying drawing 3 and accompanying drawing 4, describe details embodiment and working condition in detail according to the concrete device that the utility model proposes.

This teaching usefulness plate (is the view convenience by a clipboard face; do not draw); plate sealing together; it and aluminum alloy frame 1 constitute a flat shell and play a part equipment in fixing and the baffle jointly; single-phase miniature and motor 2 that can rotating; 3, one serving cylinders 4 of a decelerator, the word rod balance that disappears guide rail 5; haulage cable 6; the word rod 7 that disappears, the word rod moving slider 8 that disappears, word rod supporting guide 9 disappears; four fixed pulleys 10; about each 11, four part of travel switch word magnetic patch 12 that disappears, switch enclosure 13 is formed.

When the staff writing on the plate face with magnetic pen finish after, if when need eliminating whole writing on the plate, then only need press to the right the QA right side (or a QA left side) left, contactor C ₁(or C ₂) action, its normal opened contact CJ ₁₁(or CJ ₂₁) self-insurance, its normal opened contact CJ ₁₂(or CJ ₂₂) closure, motor 2 is switched on and is rotated, while indicator lamp green light LL(or amber light LH) shinny, after slowing down, decelerator drives serving cylinder 4 servings, steel wire rope 6 drives word rod 7 (or the left) motion to the right that disappears through pulley 10 transmissions, the word rod of disappearing attracts the front of black granule slave plate to move to the reverse side of plate, has eliminated the writing of whole plate face.When the right-hand member (or left end) of the word rod motion that disappears to plate, touch the travel switch X right side (or X left side), just cut off the power supply of contactor, contacts of contactor disconnects, and the motor outage stops operating.If when needing left side one side of something on the elimination plate (or right half of), when the word rod motion that disappears arrives desired location, press stop button TA, can make the word rod stop motion that disappears.

If in the time of will eliminating indivedual writing, can pick up magnetic blackboard eraser and attract a movable magnetic patch 12 at the inner bottom part of plate, on plate, there is not the vacancy of writing to move to the writing place that to eliminate, make its elimination, after intact, make the bottom of movable magnetic patch by former road Returning plate again, send the sound for preventing it, the plate bottom is lined with soft thing.

If when wanting colour writing, available " one cleans " write liquid and directly write on the plate face, directly wipes with the flannelette on the magnetic blackboard eraser when disappearing word.

Claims

1, the dustless word health care mathematics plate that disappears automatically of a kind of magnetic comprises a magnetic wordpad, it is characterized in that, also comprises: the device that disappears the word rod and drive the described word rod slip that disappears that is slidably mounted on the back side of described magnetic wordpad.

2, the dustless word health care mathematics plate that disappears automatically of magnetic as claimed in claim 1, it is characterized in that, the described word rod carriage that disappears of wherein said drive comprises: micromotor, the control device of described micromotor, the deceleration device that is connected with the shaft mechanical of described micromotor, and the device that drives the described word rod slip that disappears by described deceleration device.

3, the dustless word health care mathematics plate that disappears automatically as claimed in claim 2 is characterized in that also comprising the slidably local demagnetization piece that is positioned at the described magnetic wordpad back side.

4; the dustless word health care mathematics plate that disappears automatically as claimed in claim 3; it is characterized in that; also comprise: sealing plate; aluminum alloy frame (1); they and described magnetic wordpad connect into a flat shell; be used for fixing the device of described disappear word rod and the described word rod slip that disappears of described drive of protection; and the wherein said device that slides by the described word rod that disappears of described deceleration device drive comprises serving cylinder (4); word rod balance guide rail (5) disappears; haulage cable (6), the word rod moving slider (8) that disappears, word rod supporting guide (9) disappears; four fixed pulleys (10), and the travel switch of limit slippage position (11).